Dynamic Brake Circuit Fault (Power-up, Adv. Code 3,4,5)
Vacon · X4 AC Drive
What does 15 mean?
This fault indicates a general malfunction within the Dynamic Braking (DB) circuit detected immediately upon drive power-up, and it is not auto-resettable. This suggests a significant internal component failure or wiring issue within the braking chopper or its control. This fault prevents the drive from starting and operating safely.
Complete Troubleshooting Guide
- 1
Power down the drive and perform a thorough visual inspection of the braking circuit components, including the chopper and associated wiring, for any obvious damage or discoloration.
- 2
Disconnect the braking resistor and then test the drive again to help isolate whether the fault is in the resistor or the internal chopper circuit.
- 3
As this is often an internal hardware issue with the drive's braking module, consult the factory for advanced diagnostics, repair, or replacement of the drive or the specific braking component.
- 4
Do not attempt to operate the drive with this fault present, as it could lead to further damage.